KTQ-2 Equivalent & Substitute Parts

Part Overview

The KTQ-2 is a 2A 600VAC ceramic cartridge fuse manufactured by Eaton - Bussmann Electrical Division. This component is classified as obsolete, making identification of suitable substitute parts essential for system maintenance and component replacement in existing installations. The KTQ-2 requires a dedicated fuse holder for operation and is designed for fast-blow response characteristics in electrical and industrial applications.

Substiute Parts

KTQ-2

Eaton - Bussmann Electrical DivisionIn Stock: 1105KTQ-2 Datasheet

Current PartRFQ

BBS-2

Eaton - Bussmann Electrical DivisionIn Stock: 980BBS-2 Datasheet

DirectRFQ

0KLQ002.T

LittelfuseIn Stock: 10290KLQ002.T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KTQ-2 are identified based on strict electrical and mechanical parameter alignment. The primary substitution criteria are:

• Current Rating: 2 A (exact match required)
• Voltage Rating: 600 VAC (exact match required)
• Mounting Type: Requires Holder (cartridge format)
• Breaking Capacity: 10 kA @ Rated Voltage (exact match required)
• Physical Dimensions: Compatible with standard cartridge holder specifications
• Approval Certifications: UL certification or equivalent recognized standards

Two substitute parts meet these criteria: BBS-2 (Eaton - Bussmann Electrical Division, active status) and 0KLQ002.T (Littelfuse POWR-GARD® KLQ series, active status). Both maintain electrical equivalence to the obsolete KTQ-2 while offering current availability and active product support.

Parameter Comparison

Engineering Selection Recommendations

BBS-2 is the primary substitute for KTQ-2 replacement. Both components are manufactured by Eaton - Bussmann Electrical Division, share identical electrical specifications (2A, 600VAC, 10kA breaking capacity), and maintain fast-blow response characteristics. Physical dimensions are within acceptable tolerance (0.410" vs 0.406" diameter; 1.380" vs 1.378" length). The BBS-2 holds active product status with current manufacturing support and carries UL, CSA, and CE certifications.

0KLQ002.T (Littelfuse POWR-GARD® KLQ series) is a secondary substitute option. This component meets all critical electrical parameters and maintains UL and CE certifications. Physical dimensions are compatible with standard cartridge holders. A key distinction is the slow-blow response time versus the KTQ-2's fast-blow characteristic. This difference is significant in applications where fast-blow protection is a circuit design requirement. The 0KLQ002.T includes specified operating temperature range (-55°C ~ 125°C) and RoHS3 compliance, providing additional environmental performance data.

Frequently Asked Questions (FAQ)

Q: Can BBS-2 directly replace KTQ-2 in existing installations?

A: Yes. The BBS-2 maintains electrical equivalence (2A, 600VAC, 10kA breaking capacity), identical response time (fast-blow), and compatible physical dimensions. Both require the same holder type. The BBS-2 is manufactured by the same company and carries the same UL certification.

Q: What is the key difference between BBS-2 and 0KLQ002.T?

A: The primary difference is response time. BBS-2 is fast-blow (matching KTQ-2), while 0KLQ002.T is slow-blow. Fast-blow fuses interrupt circuits more rapidly during overcurrent events. Slow-blow fuses tolerate temporary current surges. Selection depends on circuit protection requirements. Additionally, 0KLQ002.T is manufactured by Littelfuse rather than Eaton - Bussmann.

Q: Are physical dimension differences between KTQ-2, BBS-2, and 0KLQ002.T significant?

A: Differences are minimal and within standard cartridge fuse tolerances. KTQ-2 is 0.406" diameter x 1.378" length; BBS-2 is 0.410" x 1.380"; 0KLQ002.T is 0.406" x 1.375". All three fit standard cartridge holders designed for these specifications. Verify holder compatibility with your specific equipment.

Q: Which substitute should be selected for new designs or long-term stock?

A: BBS-2 is recommended. It maintains complete electrical and mechanical equivalence to KTQ-2, carries active product status with ongoing manufacturer support, and is available from current inventory. 0KLQ002.T is suitable where slow-blow response is acceptable or where Littelfuse component standardization is preferred.

Q: Are there compliance or certification differences between these parts?

A: KTQ-2 carries UL certification. BBS-2 carries UL, CSA, and CE certifications. 0KLQ002.T carries UL and CE certifications. All three meet recognized electrical safety standards. BBS-2 and 0KLQ002.T offer broader geographic compliance coverage through multiple certifications.